[1] Tenopir C, Wang P L, Zhang Y, et al.Academic users’ interactions with ScienceDirect in search tasks: Affective and cognitive behaviors[J]. Information Processing & Management, 2008, 44(1): 105-121. [2] Rowlands I, Nicholas D, Jamali H R, et al.What do faculty and students really think about e-books?[C]// Aslib Proceedings. London: Emerald Group Publishing Limited, 2007: 489-511. [3] Renear A H, Palmer C L.Strategic reading, ontologies, and the future of scientific publishing[J]. Science, 2009, 325(5942): 828-832. [4] Gruber T R.A translation approach to portable ontology specifications[J]. Knowledge Acquisition, 1993, 5(2): 199-220. [5] Müller H M, Kenny E E, Sternberg P W.Textpresso: an ontology-based information retrieval and extraction system for biological literature[J]. PLoS Biology, 2004, 2(11): e309. [6] Ciccarese P, Soiland-Reyes S, Belhajjame K, et al.PAV ontology: provenance, authoring and versioning[J]. Journal of Biomedical Semantics, 2013, 4: 37. [7] Lebo T, Sahoo S, McGuinness D, et al. Prov-o: The prov ontology[J/OL]. W3C Recommendation, 2013. [2017-09-15]. http://www.w3.org/TR/prov-o/. [8] Ciccarese P, Ocana M, Garcia-Castro L J, et al. An open annotation ontology for science on Web 3.0[J]. Journal of Biomedical Semantics, 2011, 2: 2-4. [9] Boella G, Di Caro L, Ruggeri A, et al.Learning from syntax generalizations for automatic semantic annotation[J]. Journal of Intelligent Information Systems, 2014, 43(2): 231-246. [10] 段宇锋, 朱雯晶, 陈巧, 等. 朴素贝叶斯算法与Bootstrapping方法相结合的中文物种描述文本语义标注研究[J]. 现代图书情报技术, 2014(5): 83-89. [11] Vidal J C, Lama M, Otero-García E, et al.Graph-based semantic annotation for enriching educational content with linked data[J]. Knowledge-Based Systems, 2014, 55: 29-42. [12] Ciccarese P, Wu E, Wong G, et al.The SWAN biomedical discourse ontology[J]. Journal of Biomedical Informatics, 2008, 41(5): 739-751. [13] Gangemi A, Peroni S, Shotton D, et al.A pattern-based ontology for describing publishing workflows[C]// Proceedings of the 5th International Conference on Ontology and Semantic Web Patterns, Aachen, 2014: 2-13. [14] Constantin A, Pettifer S, Voronkov A.PDFX: fully-automated PDF-to-XML conversion of scientific literature[C]// Proceedings of the 2013 ACM Symposium on Document Engineering. New York: ACM Press, 2013: 177-180. [15] Kovriguina L, Shipilo A, Kozlov F, et al.Metadata extraction from conference proceedings using template-based approach[C]// Semantic Web Evaluation Challenge. Cham: Springer, 2015: 153-164. [16] Tkaczyk D, Szostek P, Dendek P J, et al.Cermine-automatic extraction of metadata and references from scientific literature[C]// Proceedings of 2014 11th IAPR International Workshop on Document Analysis Systems. IEEE, 2014: 217-221. [17] Han H, Giles C L, Manavoglu E, et al.Automatic document metadata extraction using support vector machines[C]// Proceedings of 2003 Joint Conference on Digital Libraries. IEEE. 2003: 37-48. [18] Kovačević A, Ivanović D, Milosavljević B, et al.Automatic extraction of metadata from scientific publications for CRIS systems[J]. Program, 2011, 45(4): 376-396. [19] Körner M, Ghavimi B, Mayr P, et al.Evaluating reference string extraction using line-based conditional random fields: A case study with german language publications[C]// Advances in Databases and Information Systems Cham: Springer, 2017: 137-145. [20] An D, Gao L, Jiang Z, et al.Citation metadata extraction via deep neural network-based segment sequence labeling[C]// Proceedings of the 2017 ACM on Conference on Information and Knowledge Management. New York: ACM Press, 2017: 1967-1970. [21] Sanderson R, Ciccarese P, Van de Sompel H, et al. Open annotation data model[R]. W3C Community Draft, 2013: 8.